Warp machine



Dec. 9, 1941. P. scVHNFELD ETAL WARP MACHINE Filed July 12, 1940 Patented Dec. 9, 1941l UNITED STATES PATENT oFF-ICE WARP MACHINE Paul Schnfeld, Chemnitz, and Kurt Barthel,

. Mittelbach, near Chemnitz, Germany Application July 12, 1940, Serial No. 345,067

5 Claims.

vlmeans of a cam is brought into the-,desired position, the arrangement being' such that the stepped key Abrings about all longitudinal displacements un'der the frame needles and the cam-controlled segment all longitudinal displacements above these needles.

Compared with the known art, the novel feature of the'automatic apparatus according to the invention Vconsists in forming the cams so that they adjust their stepped keys for all longitudinal motions of the lapping machines, which are required in a course.

The invention provides therefore automatic 'apparatus possessing the simplest possible control means for the keys or equivalents. As each stepped key, as long as it carriesout uniform adjusting motions, needs only a single cam for complete longitudinal adjustment of the lapping machines, new possibilities present themselves in theconstructi'on of warp machines. A machine for producing plain fabrics may be designed, for instance,v Whose automatic apparatus requires only one stepped key for each lapping machine and one cam for each key, so that maximum reliability in operation ensues, since no other movable parts are necessary. Such a machine can be driven at exceptional speed, because it runs practically without vibration. As all longitudinal adjustments of the lapping machines are efi'ected oy a single control member having the form of a cam, the entire circumference oi' the latter is available for adjusting the stepped key whereby a working path is provided long enough to insure soft transition.

The invention may further be advantageously applied to warp machines f known type fitted with automatic apparatus comprising an ordinary pattern mechanism, as chains or wheels,between which and the lapping machines stepped keys'are interposed. Owing to the keys and their controls, the automatic apparatus in such machines.

Germany June 18, 1938 V(Cl. 66-86) have hitherto vbeencomplex, unsteady in operv ation and therefore so slow that theyV could not be used in high speed warp machines. Y This will become possible now by the introduction of cams for 'the keys, as suggested by the invention. Furthermore, machines equipped with automatic apparatus of the kind referred to in the precedingpara'graph can be used for anew purpose if provided with key adjusting means according to the invention. These machines have so far been employed only in the manufacture of fabrics, in which after allarge number of courses a change in lapping continuously occurs or VVVfor instance a special warp is worked in4 at large distances so as to form loops,k but they may serve now also for making plain goods, in which case the stepped keys only are working. Although plain fabric can be produced also on the known warp machines having an automatic apparatus with pattern mechanism. and 'provided with stepped keys interposed between the pattern mechanism and the lapping machine, such manufacture is too uneconomical to be attractive. Machines fitted with automatic apparatus of this f class have a lower speed .thanl machines provided with plain apparatus, and the production of plain fabric, as plain half tricot, does not pay. When, however, cams of a type as proposed byk the invention permit rapid adjustment of the stepped keys. etc., the machines can be operated yat a much higher'speed during 'the making of plain goods than is possible if the pattern mechanism nas to cooperate. It is hardly necessary to point out that an automatic apparatus with pattern mechanism and stepped keys interposed between it and the lapping machinesy will also be considerably speeded up by the application oi' the invention, though the key adjusting means aie practically unchecked as to speed. 1

One embodiment of the invention is illustrated in the accompanying drawing, in which Figure 1 is a side View of'tne actuating means for the stepped keys actingupon the slides of tne lapping machines;

Fig. 2 shows part of a slide with an associated stepped key, partly broken up; and

Fig. 3 is a front view ofthe two slide adjusting members.

The lapping machines in a warp machine, particularly high speed warp machine, according to the invention are longitudinally adjusted by stepped keys 4 controlled by cams Il which make one turn during the working of a course and which are so shaped that they adjust a stepped key- 4 for all longitudinal motions of the-lapping Y machine required for one course.

` tion shown a key 4 is interposed in'known The automatic apparatus for the adjustment ofV the lapping machines may have only one steppedkey 4 for each lapping machine and one cam II for adjusting the key 4. In the construcner between "thepattern mechanism I, 2 and maanv the lapping machine, as indicated in Fig. 3. TheI pattern mechanism comprises adrum I provided with an open-linkV chain, not shown, orthe mechanism may consist of-pattern wheelsand transmission levers 2 acting upon a slide 3. The

ykeys 4 will then be independent of thepattern mechanism I, 2 between Whichand'the slide `3 stance, as assumed in the drawing, the automatic apparatus has four slides 3 of whichthe central,

ones possess two stepped keys 4, the arrangement may be such that,-when the stepped keys 4 have to work only alternately, one camII may actuate one roller lever I4, I5 and one ram I1 both keys' 4. For this purpose, they ram II is articulated to the free vendV of the roller lever I4, I5 and provided with an arm I8 acted upon by` an adjusting lever I9 which, as shown in Fig. 3. Y

is arranged at and preferably controlled by ,the pattern member-I equipped with a special wheel 'or an open-link chain, not shown. In

they are disposed, and for that purpose are Y guided vertically Yand arranged in Ya. slide boxv 5. WithV their rear edge the stepped keys 4 abut against an edge 6 of the box 5. The slides 3 have a recess 1v which permits adjustment of the slides by the patternVV memberV Iiridependently of the steppedV keysf4. Likewise,V theslides' v3 can" be adjusted by'the stepped keys 4 independently of the patternfmechanism I, 2. In fthe rst case,

Athe arrangement is suchr thatthe stepped keys 4 place their lowest step, i; e., thestep 8, opposite the slide 3fwhich, due to vthe recess ,'I, can' thus Y ,Y 'lments, etc.

this way, the ram I'I may be used for more than two'keys 4.- The ram I1 is secured against acr Ycidental displacement by a spring 2| which alwaysdrawsv ythe arm I8V against the adjusting` lever I9.

n The steppedl keys 4 may be replaced by other Y means producing the same eiect, as stepped segwhat is'ciaimed is:

1. In va warp machine, particularlyra highl speed warp machine, an automatic apparatus V VVcomprising stepped keys'for longitudinally-advjusting the lapping machineacams for control-v be 'inwardlyrdisplraced Vby the pattern mechanism fI, '2 .7 l:In theffother fcaseythe v stepped keys 4 `are lifted-'to Vplace Ytheir `working step oppOsite vthe slides 3. When' inlovvest position the keys 4 `'are Y held therein by ai'spring IILv If the stepped keys l'4po`ssess only one working f `'step' 9 .besides their `startin'gstep 8VK as shown,

K "they cank be used only forsimple lapping over 1 A under'l. desired, the keys 4 must be altered accordingly,

Should diierent lapping operations be but the arrangement is invariably such'thatbetween the .various steps l an inclined' surface is provided, so thatrth'e `keys' `during vupwardfad- -justmentdisplace their slide 3 inwardly. The

keys 4 are-adjusted by means of a cam II` on the shaftofwhich a rotating disc I2 is prefer.-V

Y' ably arranged. It is possible also to provide sev-V Y feral cams'for each stepped key `4 topermita change in lapping yby letting one orr the other,` cam Y -act upon eachrkey. YTo ,facilitate this operation,

ithe memberV directly'moved bythe cams, i. e., a' v leverrI4 vdisposed at I3.; is tted Vwith avroller I5 which is displaceable y,onits shaftand is contrance througntne 'rrnuiumV of a' forked lever le I Y by a Ypattern mechanismV not shown.` The roller lever I4, YI5 does not act directlyupon its stepped Vkey 4 but with the aid of a ram I1. which functions jinj a highlyV a'dvar'itageousv manner. If, for.i introlled by 'aE pattern mechanism. Y Y

` n PAULSCHNFELD.'

"ling said keys, said cams being so' formed that they adjust theirV respective keys for all 'longitudinal motions of the lapping machines required in one course, anda rotatable disc connected with each ofr said cams. n

l2.111 a warp machine, particularly 'a high speed Warp machine,r an automatic apparatus accordig to claimV l, comprising, a ram'Y acting directlyion the keys lfor adjusting them 'in ascending direction.y

V3. In a warp" machine, particularly a `high speed warp machine, an'automatic apparatus according to claim l, comprising-'an adjustable ram for alternately actuating Y two' or more keys.

Y 4. InA a warp machine, particularly a `high speed Warp machine, a'n automatic apparatus according to claim 1, comprising an adjustable ram for alternatelyractuating two 0r` morekeys, said ram being movably ydisposedwith its lowerend on the member moved by thecams.

5.'In a warp machine, particularly 'ka high I speed warp machine, an automatic apparatus ac- :cordingeto claim 1comprising an adjustable ram for alternately actuating two or. more keys. said ram being movably disposed with vits `lower end on the member moved by thev cams and con- Y KURT BARTHEL. 

